Growth Protocol:	All seeds were surface sterilized using 5 % Sodium Hypochloride solution under the fume hood. After sterilization seeds were plated on MS media containing 1% sucrose. After stratification for two days in the dark at 4°C seedlings were grown in a growth room under long-day photoperiod (16 hrs light and 8 hrs darkness) at 22°C light and 20°C darkness temperature and a light intensity of 110 µE. All seedlings were transferred to pots and plants were grown in a growth chamber at 60 % humidity and daily cycles of 16 hrs light at 21°C and 8hrs darkness at 18°C. ts were grown in a growth cabinet under long day photoperiods (16 h light and 8 h dark) at 22°C. After 10 days, seedlings were transferred to soil and plants were grown in a growth chamber at 60% humidity and daily cycles of 16 h light at 22°C and 8 h darkness at 18°C.
Treatment Protocol:	For all crosses, designated female partners were emasculated, and the pistils were hand-pollinated 2 days after emasculation.
Extract Protocol:	For DNA-seq, 300 mg young fresh leaves were used as DNA source. For RNA-seq, dissected endosperm of 300-500 seeds per replicate was used. Seeds were harvested at 6 DAP and stored at -20oC in RNAlater® (Sigma-Aldrich, St Louis, USA). RNA extraction was done using RNAqueous® Kit with Plant RNA Isolation Aid (Life Technologies, Carlsbad, USA).
Library Construction Protocol:	The RNA-sequencing libraries were prepared using TruSeq® RNA Sample Preparation Kit v2 (Illumina, San Diego, USA) according to the manufacturer's instructions.DNA-seq and RNA-seq

Molecule Type:	polyA(+) RNA
Library Source:
Library Layout:	PAIRED
Library Strand:	-
Platform:	ILLUMINA
Instrument Model:	Illumina HiSeq 2000
Strand-Specific:	Unspecific

Data Resource	GEN Sample ID	GEN Dataset ID	Project ID	BioProject ID	Sample ID	Sample Name	BioSample ID	Sample Accession	Experiment Accession	Release Date	Submission Date	Update Date	Species	Race	Ethnicity	Age	Age Unit	Gender	Source Name	Tissue	Cell Type	Cell Subtype	Cell Line	Disease	Disease State	Development Stage	Mutation	Phenotype	Condition Detail	Growth Protocol	Treatment Protocol	Extract Protocol	Library Construction Protocol	Molecule Type	Library Layout	Strand-Specific	Library Strand	Spike-In	Strategy	Platform	Instrument Model	Cell Number	Reads Number	Gbases	AvgSpotLen1	AvgSpotLen2	Uniq Mapping Rate	Multiple Mapping Rate	Coverage Rate